Controlling device for valves



Jan. 22, 1935. c. c. HANSEN CONTROLLING DEVICE FOR VALVES Filed July 27, 1935 INVENTOR- BY at Hrs ATTORNEY.

Patented Jan. 22, 1935 UNITED STATES CONTROLLING DEVICE FOR VALVES Charles C. Hansen, Easton, Pa., assignor to Ingersoll-Rand Company, Jersey City, N. J., a corporation of New Jersey Application July 27, 1933, Serial No. 682,396

1 Claim.

This invention relates to controlling devices, and more particularly to a controlling device adapted to simultaneously actuate a plurality of valves employed for controlling communication between different sources of fluid supply and a common point of application.

One object of the invention is to effect alternate communication between a pair of supply conduits conveying diiferent fluid media, as for instance compressed air and water, with a common discharge tube.

Other objects will be in part obvious and in part pointed out hereinafter.

In the drawing accompanying this specification and in which similar reference numerals refer to similar parts,

Figure 1 is an elevation, partly in section, of a pair of supply conduits and their respective valves, showing the controlling device applied thereto and the valves in the closed positions,

Figure 2 is a similar View showing the controlling device in position for maintaining one valve open and the other closed, and

Figure 3 is a view similar to Figure 2 showing the position of the controlling device for maintaining the valves in the reverse order.

Referring more particularly to the drawing, 4 and 5 are conduits which may be connected to sources of pressure fluid and liquid supply, respectively, for conveying such media to a common discharge tube 6 which may constitute the cleansing fluid conveying tube of a rock drill (not shown).

Interposed in the conduits 4 and 5 are valves 7 and 8, respectively, for controlling communication between pressure fluid and liquid supply and the discharge tube 6. The valves 7 and 8 which may be identical in all essential respects are illustrated as being of the rotary plug type. Each valve has a transverse port 9 to effect communication between the portions of the conduits lying on opposite sides of the valves.

On each valve is a lever 10 which may be afl'ixed, in any suitable manner, to the valves, and the opposite or free ends of the levers 10 are connected to the ends of the link 11 as by means of pivot pins 12. The link 11 is provided with a grip member 13 whereby the link and, therefore, the valves may be conveniently manipulated. On one side of the link 11 is a stop member or abutment 14 having opposed bevelled surfaces 15 and 16 which seat against the levers 10 for limiting the degree of rotary movement'of the throttle valves.

In practice, let it be assumed that it be desired to admit pressure fluid to the discharge tube, as for instance for blowing water and cuttings from a hole being drilled. The link 11 may then be actuated to the left, as the figures in the drawing are viewed, until the bevelled surface 15 abuts the lever 10 of the valve 7. In this position of the link the port 9 of the valve 7 will aliord communication between the opposed sections of the conduit 4 and pressure fluid may then flow directly from the source of supply to the discharge tube 6 and the valve 8 will occupy its closed position to prevent the flow of water to the discharge tube 6.

After the detritus and water have been blown from the drill hole the link 11 may be actuated to its opposite hand limiting position wherein the bevelled surface 16 seats against the lever 10 of the valve 8. In the new position of the parts the valve 7 will be closed and the port 9 of the valve 8 will afiord communication between the source of fluid supply and the discharge tube 6 so that cleansing fluid may then flow into the drill hole to flush the cuttings therefrom.

I claim:

In a controlling device, the combination of a plurality of supply conduits having a common discharge tube, valves in the conduits for controlling the flow of fluid to the discharge tube, levers on the valves, a link pivotally connected to the levers to move the valves in opposite directions and whereby, upon movement of the link in either direction, one valve will be opened to communicate a supply conduit with the discharge tube and another valve is moved to cut oif communication between another supply conduit and the discharge tube, and a stop member on the link engaging the levers to limit the degree of movement of the valves in either direction.

CHARLES C. HANSEN. 

